Production & Quality
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MS Suspension Polymerization Preparation
Problem Phenomenon
MS suspension polymerization preparation process, monomer refining and initiation.
Cause Analysis
MS suspension polymerization preparation; monomers styrene and methyl methacrylate are purified by alkali washing and redistillation in advance; initiator benzoyl peroxide recrystallized; nitrogen protection; temperature control; bead quality.
Solution
①Monomer refining; ②initiator purification; ③nitrogen protection; ④temperature control; ⑤bead quality.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Refining and protection in MS polymerization preparation are the quality foundation; process control ensures performance; management ensures stability.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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